环氧树脂纳米复合材料界面及其对电性能影响分析

doi:10.19595/j.cnki.1000-6753.tces.170992

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Abstract Carbon nanotubes (MWCNTs) were individually treated with mixed acids, epoxy macromolecules, and silane coupling agents, and the products were marked as C-MWCNTs, E-MWCNTs, Si-MWCNTs. The epoxy resin composites were made by blending MWCNTs, organic montmorillonite (O-MMT) and epoxy resin (EP). The influence of C-MWCNTs, E-MWCNTs, Si-MWCNTs on the interface of composites was investigated by analyzing the impact test data of samples, the section morphology of the composites and the infrared spectrum of MWCNTs. The influence of interface on the electrical property of composites was discussed by using the interface barrier model. The results show that the interface bonding strength between Si-MWCNTs (or E-MWCNTs) and epoxy resin is greater than that of C-MWCNTs. When the mass fraction of the MWCNTs is the same, the interface of Si-MWCNTs/EP is larger than the that of E-MWCNTs/EP. When Si-MWCNTs is dispersed evenly in the matrix, with the adding of Si-MWCNTs, free volume increases in Si-MWCNTs/EP, the bonding area expands, which enhances the restriction of bonding area on dipole polarization. The above two aspects jointly promote the reduction of dielectric constant and dielectric loss of Si-MWCNTs/EP. With the increase of MWCNTs, the transition region expands, the trap density increases, so the breakdown strength of Si-MWCNTs/EP composites is improved. The O-MMT weakens the agglomeration of MWCNTs in the matrix and reduces the conductivity of MWCNTs/O-MMT/EP.

Key words： Epoxy resin carbon nanotubes montmorillonite interface electrical property

Received: 10 July 2017 Published: 03 September 2018

PACS:

TQ323.5

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	Wu Zijian
	Wang Chen
	Zhang Mingyan
	Pei Xin
	Jiang Peng

Cite this article:

Wu Zijian,Wang Chen,Zhang Mingyan等. Interface of Epoxy Resin Composites, and Its Influence on Electrical Performance[J]. Transactions of China Electrotechnical Society, 2018, 33(16): 3897-3905.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.170992 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I16/3897

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